Vehicle Light Module Collector Layout for Sharp Cutoff Beams
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Solution Overview
Problem
Existing luminous modules in automotive vehicles face challenges in achieving compactness without compromising the effectiveness and uniformity of light beams, particularly in forming sharp upper horizontal cutoffs.
Innovation Solution
A luminous unit comprising two offset collectors and an optical projection system with a specific focus arrangement, allowing for separate lighting functions to be performed in a compact space by using a single printed circuit board and optimizing the positioning of collectors and optical projection system to ensure minimal space usage while maintaining optimal lighting quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the luminous module is made more compact to reduce space and manufacturing costs, then the compactness and cost are improved, but the effectiveness and uniformity of the light beams deteriorate
Solution Approach 1:
The patent introduces a longitudinal dimension (depth) to the collector arrangement, offsetting collectors along the optical axis rather than only laterally. This three-dimensional configuration allows multiple collectors to coexist in a compact lateral footprint while maintaining adequate separation for optical performance, thus reducing module volume without compromising light beam uniformity
2Volume of moving object
If the luminous module is made more compact to reduce space, then the compactness is improved, but the sharpness of the light beam cutoff deteriorates
Solution Approach 1:
By offsetting collectors along the longitudinal direction (depth) in addition to lateral offsetting, the patent creates a three-dimensional collector arrangement. This allows the optical projection system to receive light from multiple collectors at different depths, maintaining the precise geometric relationships needed for sharp cutoff edges while reducing the overall lateral footprint and volume of the module
3Volume of moving object
If multiple lighting functions are integrated into a single luminous module to reduce space, then the compactness is improved, but the device complexity increases
Solution Approach 1:
The patent implements multiple lighting functions (different beam patterns, cutoff angles, and illumination characteristics) within a single luminous module by using multiple collectors that can be selectively activated. Each collector is optimized for specific lighting functions, and the optical projection system projects light from all collectors simultaneously or selectively, enabling one module to perform what would traditionally require multiple separate modules
Solution Approach 2:
The patent merges multiple lighting functions and collectors into a single integrated luminous module with a shared optical projection system. By combining the optical projection resources and integrating multiple collectors in a compact arrangement, the patent reduces the total number of separate modules needed while managing complexity through unified optical design
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables the luminous unit to perform multiple lighting functions efficiently, including low and high beams, while minimizing space requirements and ensuring sharp cutoff edges, thus enhancing compactness and lighting uniformity.
Implementation Method 1
a first collector configured to collect and reflect the first light rays emitted by the first light source
Data Source
AI summary
The present invention relates to a luminous unit of a luminous module. The luminous unit includes a luminous subassembly with a first light source and a first collector, a luminous subassembly with a second light source and a second collector, an optical projection system with an optical axis parallel to a longitudinal direction. The collectors are offset along the longitudinal direction and along a transverse direction, the optical projection system includes an optical line focus, the first collector includes a rear end edge disposed in the vicinity of the optical line focus of the optical projection system. The second collector includes an object focus at which the second light source is positioned and an image focus at least partially coincident with the optical line focus of the optical projection system.